Determining the Shear Resistance in Landslides with Respect to Shear Displacement and Shearing Time in Drainage-Controlled Ring Shear Tests

Shear stress is an important parameter in estimating the slope stability and flow dynamics mass movements. The ring shear test can often be employed to determine residual because of its suitability for large deformations assumed situ drainage conditions. Determination weathered landslide materials composed coarse-grained sediments was examined with respect displacement condition. Based on experimental results, has typical maximum minimum values (i.e., peak stress). measured generally increases increase speed regardless In general, when a relatively long shearing time applied. stress, which known as resistance at initiation occurrence along pre-existing slip surface body, also measurable even though limited (0.1–100 mm) mm/s) are range soils obtained from tests roughly half value direct tests. used estimate reactivation movement.